Every language teacher knows that learning a foreign language is an extremely complex process. A child begins to learn his mother tongue by picking up the sounds he hears in his family. All the way through, the child undergoes an unconscious and spontaneous experience of using a system of language to express his wants. Later, he makes a conscious effort to perfect his mastery of the system he has been using.
On the other hand, students beginning to learn a foreign language make a conscious effort to acquire the language according to whatever guidance they may receive.
Perspective on Learning a Foreign Language